Babbitting-mandrel.



1'. M. MARK.

BABBITTING MANDREL.

APPLLCATION FILED AUG-25', 1917.

1,299,981 a Patent-ed Apr. 8,1919;

A5 ii Q I =5 l INVENTOR Maw 15a Maw/f".

ATTORNEY orricai B BBITTING-MANDREL.

Specification of Letters Patent.

' rammed Apr. 8, 1919.

Application filed August 25, 1917. Serial No. 188,125.

To ail whom it may concern:

Be it known that'I, JAMES M. MARK, a citizen of the United States, residing at Oregon City, in the county of Clackamas and State of Oregon, have invented new and useful Improvements in Babbitting-Mandrels, of which the following is a specification.

This invention relates broadly to metalfounding, and more especially to molds for lining articles; and the'object of the" same is to produce a mandrel or male mold member for giving shape to the wear face of a lining of Babbitt metal such asplaeed in a shaft hanger or a journal box or other box within which a'member is adapted to rotate or reciprocate.

The particular purpose of the present invention is to produce a mandrel which may be employedwhether the shell of the'box' is in one part or in two, which will be or may be mounted on one part or held between two parts, and which will have provision for beveling the corners of the'Babbitt'lining througout parts of its length and providing an oil chamber in the upper bearing section throughout part of its length.

Details will be found in the following specification, and areillustrated in the aceompanying drawings wherein Figure 1 is a plan view Fig. 2 a side mandrel with its ribs.

Fig. 4 is a plan View partly broken away, I

and Fig. 5 an end view showing the device as employedfor babbitting a hanger shell. Fig. 6 is a side view partly broken away showing the" mandrel within an ordinary flat journal box. a

Fig. 7 is an'end elevation showing the mandrel and Babbitt lining within a c011 necting rod box for pumps and the like.

The mandrel body 1 is a solidsteel cylinder having a diameter which is only a frac tion larger than that of the shaft intended subsequently for use within the babbitted bearing, and-having a length a little greater han the bearing itself. At diametrically opposite sides it has inset into its periphery two longitudinal webs 2, each being preferably rather thicker and stronger where it is embedded within the body than elsewhere,

beveled on oppositesides where it protrudes beyond the periphery thereof as at 3, and

fiat and thin beyond the beveled portion as at 4.. -The thin ortions of these webs are fins .designed to t between the ad yacent inner corners of a box such as indie, ted at B in Fig. 6 or at C in Fig.-7, or sa'i fins could overlie the edges of and rest 1 )on a half-box or hanger such as that in l" at H in Fig. 4. These fins therefore spac the righthand side of the mandrel body\ from the contiguous face of the box-section or hanger H a distance which is yet to be filled with the Babbitt metal. Any appropriate means may be employed for holding the body in this position. As seen in Fig. 5

an ordinary clamp 5 is employed, its arm 6 resting beneath the box H, and its screw.7 having a button 8 which bears against the mandrel. I

I The use ofthis invention for babbitting a half-bearing orhanger, is well shown in Figs. 4: and 5. After connecting the parts as shown in Fig. 5 and as has already been explained, the mandred and box or hanger are stood on end as seen in Fig. 4, andthe babbitt poured where indicated by the arrow, so that it flows into the space between the mandrel and thehanger and extends. around within said space from one thin fin at to the opposite thin fin 4:, being meanwhile prevented from running out the lowersend by any fiat surface on which the ban er and mandrel are stood at the time. A ter "the ,babbitt has set and the parts have view, and Fig.- 3 an end elevationof the ably at a point half-way between the two webs 2, is a third web or morespecifically a r1b-10 whose useis best-illustrated in Figs. 6 and 7 When a two-part hanger or box is to be babbitted, the right-hand side of the mandrel shown in Fig. 5 is disposed adjacent the lower half of the box as in Fig. 7 which would be the right hand side of the box C in Fig. 6, but the-other side of the mandrel having the rib 10 is disposed adjacent the opposite half of the box, and

therefore when the Babbitt metal. is poured from that side and permitted to set, a groove 11 is formed in the inner face of the bab'bitt for the purpose of receiving a lubricant as usual. In order to admit the lubricant, this portion of the bearing ma have an oil inlet as indicated at 12;in Fig.

- Attention is now invited toFig's. 1 and 2.- Here it will be seen thattherib 10 and the bevels 3 of the webs 2 do'not extend the may'flow past both ends of'the beve1s-3 as.

full length of the body1in fact, they do not extend the full length of the bearing or half-bearing which is to .be babbitted, but the finsfll do. The result is that the soft or fluent Babbitt f'metal when first poured,

flows. past both ends of the rib. 10 as seen at- 13 in Fig. 6 so. that eventually both ends of,

the-groove 1-11 are closed to the loss of oil or other lub'ricant' Also 'the soft babbitt at; 15 in Fig. 6; but in order topreventits escape,'the fins 4: are carried the full len h of the mandrelas best seen in Figs. 1 an 2.

When babbitting a two-part bearing as shown in Fig. 6, the pouring must be done at the .two points shown by thearrows;

The beveled portions 3 of the webs 2 will have the'efi'ectof beveling the corners of the babbittg in both halves of. the bearing. It will be'rinoticed particularly in Fig. 5 that these bevels 3-3 are not alike. The pur ose is to bevel the corner of the lower hal bearing to a greater extent than that v aeeaeei of the other half, because ordinarily grease and sediment accumulate to a certain extent therein.

What is claimed as new 1s The herein described mandrel iorbabhitting .journal boxes and the like, the same comprising a cylindrical core having diametrically opposed longitudinalslots therein, extending the full length thereof and having-an additional slot terminating adjacenttheends of the core and disposed intermediate between the first mentioned slots,

- a rib seated in the last mentioned slot and distance approximately equaling the length oflthe'core. Tin-testimony whereof I afix my signature.

JAMEs M. MARK; 

